Aeroplane.



E. C. F. W- BLIESATH. AEBOPLANE.

urmornox FILED Jun}: 19, 1911.

1,017,733. Patented Feb. 20, 1912.

3 SHEETS-BHEET 1.

' E. G. F. W. BLIESATH.

AEBOPLANE. APPLICATION FILED JUNE 19, 1911.

Patented Feb. 20, 1912.

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ERNST C. I. W. BLIESATH, 0F SEATTLE, WASHINGTON.

AEROPLANE.

To all whom it may concern:

.Be it known that I, ERNST G. F. W. BLIE- SATH, citizen of Germany, residing at Seattle, in the county of King and State of Washington,haveinvented certain new and useful Improvements in Aeroplanes, of which the following is a specification.

My invention relates to aeroplanes, and more particularly to the supporting planes therefor; and also to means for controlling said planes relative to the angle of incidence;

It is my object to provide a type of supporting plane having great strength with a minimum of wei ht, and especiall adapted to retain its equilibrium should the motive power fail.

It is also my object to provide an aeroplane having its supporting plane rectangular and nearly square in plan outline with straight front and rear edges and upwardly inclined side edges forming inclined planes at each side to insure greater stability in turning by giving more buoyancy to the dipping side.

It is also my object to providev an aeroplane, the carriage or body of which is pivotally suspended to the supporting plane at the intersection of its transverse and longitudinal axes, whereby the center of gravity is lowered and maintained as nearly as possible in line with the center of the supporting surface- It is also in'yobject to govern the altitude flight of the aeroplane by a supporting plane adapted to be tilted or partly turned on its transverse axis.

In the accompanying drawings forming a art of this specification, I have shown my invention applied to a monoplane, but I do not confine myself to one supporting plane, as my invention is equally Well adapted to a multiplane.

Figure 1 is a side elevation of my aeroplane; Fig. 2 is a two plan view; Fig. 3 is a front elevation; and Fig. 4 is a detail perspective View of one of the triangular sideplanes.

Referring more particularly to the drawings I have shown the supporting plane composed of fourv planes, viz: trapezoidal planes A, A, and triangular side planes A, A. The front and rear planes A, A may Specification of Letters Patent.

Application filed June 19, 1911.

Patented Feb. 20, 1912. Serial No. 634,046.

present flat surfaces or curved. Meeting the converging sides of the trapezoids and inclined upwardly and outwardly therefrom are arranged the triangular side planes A, A which are hipped on their transverse axes as shown in F 1g. 4.-

B, denotes a spar projected upon the transverse axis 0 the supporting plane, bears upon the dividing line between the two trapezoids and passes under and projects beyond the side edges of the side planes.

6, 6, denote eyes formed at each end of said spar.

C, denotes a short mast having an eye at its upperend; its lower end being fastened to said spar midway of its length.

D denotes a brace secured to the 'masthead and extends horizontally and rear- Wardly therefrom parallel to the longitudinal axes of the aeroplane to a point above the rear edge of the supporting plane where it is bent at right angles and passed down through the supporting plane and fastened to its frame; the. vertical portion of this brace serves as a stationary rudder post. E denotes the rudder journaled to said rudder post above and below the rear edge of the supporting plane.

. e, 6, denote steering cords fastened to free end of rudder and pass through guides c, e, to steering Wheel.

F denotes a series of stays extending diagonally from the mast-head to the four corners of the supportin plane. F denotes like stays extending from the mast-head transversely-and fastened at the sides of supporting plane midway between the corners.

F denote two stays extending from the mast-head diagonally to the rear edge of the supporting plane. Said stays all pass above the supporting plane and are made fast to its frame, and form together with the mast and brace D a superimposed truss for brac ing the frame-work oft-he supporting plane and holding the several planes rigidly in fixed relation at the prescribed angles. In addition to saidstays I provide at each triangular side, stays F connecting the ends of the spar B to the under side of the four corners of the supporting plane, and short stays F connecting the said spar ends to the under side of the triangular sides midwa between the corners.

denotes the carriage consisting of two parallel members connected midway of their length and at each end by intermediate crosspieces. The carriage is swung-directly under the longitudinal axis of thesupporting plane as follows: H, H denote two A-shaped supports securely fastened to the carriage midway of its length and provided at their upper ends with suitable hangers h, h, having journal's through which pass the spar B. Thus the carriage is hung pendulous to the center of the supporting (planes and adapted to be swun longitu inally when the aeroplane is in a sliding wei ht mounted on a traveler J secured on the finngitudinalaxis of the supporting plane frame and serves to differentiate the center of gravity. Said weight is operated by a. cord'j. The'carriage being-pendulous on the transverse axis of the supportin plane, any suitable means may be employe to tilt the lane relative to the angle of in-' cidence. I ave shown, though I do not confine myself to this means, two yokes K, K,

' and secured to the fastened .-to the front edge of the supporting plane on opposite sides of its center, an

connecting said yokes to an operating cord passing under a guide pulley to a shaft or drum of an operating wheel in. L, L, denote similar yokes fastened to the front edge of said plane opposite and operatedin similar manner by a cord Z passing under a guide pulley Z and thence to the said wheel lo. M, M, denotetwo stays passing through eyes 6 b, at the ends of spar B front andrear ends of the carriage on opposite sides. N, denotes a pro eller, and at its shaft. 0 denotes an A-s aped support secured to the carriage on which the propeller shaft is mounted.

My supporting plane isformed by' fitting cloth or other suitable fabric over a frame com osed of two arallel transverse spars Q, extending f fom side to sideof the plane which form the front and rear edge supports respectively. The spar B passes transversely across t e forms a central transverse brace or the frame, a purchase for the mast and stays, binds the fabric down in place on the transverse axis of the plane, and receives the upward thrust of the ribs R of the frame. The sides of the frame are formed by four diagonally placed spars S fastened to spar B and the ends of supporting: plane; and two short s reader *ars U rigged at the intersection o booms and secured-to the spar 13.

ight. J denotes.

and thence upper surface of the- -fabric' midway between -spars Q, Q, in a lower horizontal lane an In starting the aeroplane the pilot at first should tilt or turn the supporting plane on its transverse axis until the front or leading edge is inclined upward at a slight angle to the horizontal. When sufficient momentum is gained to start the flight, this angle is increased to about fifteen de ees approximately; depending upon the ection and strength of the air currents. As thealtitude desired is reached the angle of inclination is reduced suificiently to lay a horizontal course. In descending the supporting plane is tilted slightly downward until a landing is about to 'be. made; then as the motor is stopped the supporting plane may be tilted up at an angle of about thirtyfive degrees, thus causing it to act as a. drag and serve to check the coastingmovement of the aeroplane as the wheels strike the ground. I

It is evident that should the motive power fail, the pilot can instantly bring the supit will act as a parachute in governing the descent of the aero lane.

Having describe my invention what I claim and desire to secure by Letters Patcut is:

l. A supporting plane for'aeroplanes rectangular 1n plan having its front and rear edges normally in the same horizontal plane an in a higher horizontal plane than the transverse axis of the supporting lane, the sides of said plane bein hippef on said aids and inclined upward ly from the body of the lane and from the four corners or angles t ereof.

2. A. supporting plane for aero lanes composed 0 four planes rigidly fix to a frame in common .t e front and rear planes forming trapezoids while the planes at each side are triangular and inclined upwardly and outwardly from the converging sides of, said trapezoids. Y

3. A supporting plane composed of the front and rear planes and the .side planes hip d on their transverse axes, the spar pro ected on the transverse axis of-thesupand rear, and the ribs conneetin the diagonally placed ars, and bracing and holding said spars in position, 4. In an aeroplane the combination of the parallel transverse spars, the intermediate transverse spar placed midway between said parallel spars having projecting ends, the ribs connecting the two parallel transverse spars and bearing upon the under side of said intermediate spar, the diagonally placed spars, the spreader spars, a centrally ocated mast secured to said intermediate spar, braces connecting said mast, spare, and the extended ends of said transverse spar,

a carriage mounted pendulous of said transorting plane to a horizontal position, when porting plane, the parallel spars in front said spars, means for transverse axis and testimony whereof afiix my signa-. ture in presence of two witnesses.

ERNST C. F, W. BLIESATH.

Witnesses:

RICHARD D. BAKER, AUGUST MEHLHORN, Jr. 

